Home / 388,077.90-582,178.41-121,779.06

Finding the Fourth Proportional to 388,077.90, 582,178.41 and 121,779.06

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Solution

The fourth proportional to 388,077.90, 582,178.41 and 121,779.06 is: 182,687.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,077.90 : 582,178.41 = 121,779.06 : x
  2. Step 2: Convert to fraction form
    388,077.90/582,178.41 = 121,779.06/x
  3. Step 3: Cross multiply
    388,077.90x = 582,178.41 × 121,779.06
  4. Step 4: Simplify right side
    388,077.90x = 70,897,139,522.09
  5. Step 5: Solve for x
    x = 70,897,139,522.09/388,077.90
  6. Step 6: Final answer
    x = 182,687.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.